Gas cleaner



March 24, 1931. J, F- DOVEL 1,797,906'

GAS CLEANER Filed Feb. 2, 1928 2 Sheets-Shea( l I March 24, 1931` J. P. DOVEL I v 1,797,906

GAS GLEANE R FiledFeb. 2, 1928 2 sneetssneex 2 f JRoVe] as are` used in blast furnaces, more particu-k Patented Mar. 24, 1931 Unirse srAfrs-s rarenresricn f GAs CLEANER Application. ledF'ebruary 2, 1928. SeraINo. 251,441.

My inventionfrelatesv t0 gas cleaners such larly to gas cleaners such as are vdescribed and claimed in Letters Patent No. 1,609,611,

i5 issued to me .December 7, 1926, and has for imo its object the provision of apparatus for main-- taining theinteriorof such `a cleaner free from dust depositswhereby the cleaner may be operatedfor longer periods of time Wit-hout necessity of shut `downs for cleaning.

A further object of my invention is to provide means for the -mechanical removal of dust from* gas cleaning apparatus of the character designated whereby the'neces'sity for shutting the apparatus down for manual cleaning is obviate'd.

A more specific object of lnyinvention is to provide a scraper adapted to traverse the walls of al gas cleanery where the gas comes in contact with water-and is liable to stick and form deposits, together with simple, effective meansfor operating the scraper.

While the apparatus described in `my `before mentioned patent has proved to be eminently successful and reliable in operation, I have found, especially with heavily dust laden gas, that where the gas strikes the edge of the watervin the cleaning through or becomes damp and strikes the wall of the vessel in the vicinity of the cleaning trough, it has a tendency to stick` to the walls of the vessel and collect other such particles. The particles of dust thus collected on the walls have such cementitous qualities that, unless loosened, there is a building up of such cakeddeposits on the walls until the apparatus must,

at intervals, be shut down and ,manually cleaned. Y

I have found that the before mentioned deposits of caked material around a cleaning trough or water way, such kas has just been described, may be prevented by scraping the walls of the cleaner at intervals along the water way, thus loosening the deposits and'. permitting them to be carried out by the water iiow through the cleaner. To this end my invention comprises a. scraper built up from a plurality of bars conformed to the shape yof the water way and secured to a cable extending along the water Way and through the end walls of the vessel. The

cable has its two ends secured to a drum and means are provided for rotating the drum in opposite directions whereby the scraper may be pulledto and fro along the water Way. By this apparatus, I am enabled to run a gas cleaner for a much longer interval of vtime without necessitypof a shut down and manual. loosening of the dust deposits.

' Apparatus embodyingfeatures -of my invention is illustrated in the accompanying drawing, forming a part of this application, wherein.

Fig. :1 is a longitudinal.' sectional view taken along the line I-f-I of Fig. 2, and

2 is a transverse sectional View taken along theline IIII of Fig. 1;

Referring to the drawing, I show a gas cleaner comprisinga vessel having end walls 10'and 11,y an upper wall 12 and bottom V- shaped troughs or water Ways 13 and 14.

The enclosedvessel is mounted on supporting` structure comprising end members 16 and 17, the end member 16 being higher than the end memberl so that vthe vessel is slightly inclined from'the horizontal. Within the enf closed vessel are'provided bailies 18, 19 and 21,*the baiilesflS and 21eXtending downwardlyf from the kupperwall 12'to a point above the troughs V13 and 14, and the baffle 19 extending upwardly from the bottom of the troughs 13 and 14. Gas to be cleaned is admitted to the vessel'through an inlet 22 and passes downwardly under the baffle 18 over the trough 14, upwardlyover the bathe 19, againgdownwardly under the baffle 21 across the trough Lland then upwardly and out of the cleaner 'through an outlet 23. Vater is admitted to the troughs 13 and 14 by anyfsuitablemeans, such as a conduit 24,

and runs by gravity to theopposite end of thecleaner `from whence it is discharged through anloutlet 2G.' `The `gas passing under the baflies 18 Vand 21 comes in contact with or n. c eilt invention, will now be described. llt/lithin each ofV the tl-shaped -Water Ways or troughs and le s provided a scraper con- -1 shape to the troughs and joined form a unitary structure by l forming in together to gitudinally exteroln j members Joined to the op- )turned ends of the niembers 5l sverse plate members outwar d ough ed valle l() and l?. is a cable 36. e secured to the plate member clamps 87. llflhere the cable S6 lough the Walls l() and ll, l pro f1 5 rt the'inlet end ofthe vessel beyond the .gui-de 3S is provided a eily over which toe cable sel, a movable sheave lf2 is provided, th sheave 42 being ournaled in bearings 4:8 supported by member le slidably mounted upon a structural meint r 46, the le ter being supported by the structural members 16 and 17. The opposed ends of the cable 36 ar brought around the sheaves ll and l2 and unner two other sheaves and 49 to a drum 5l mounted upon longiti1 extending structural members 52 53 arranged beneath the Vcleaning` vessel. The ends of the cable 36 are brought around the drum 51 and secured thereto so that, as the drum 5l is rotated, one end of the cable 35 is Wound onto the drum While the other end is paid off. t- Will be seen that, in this manner, the scraper may bespulled from Vone endto the other of the enclosed vesselalong its associated Water Way, lepending upon the direction of rotation of the drumbl. The drum l is driven by means of a reversible motor 56 through a gear train 57. c l Fromv the foregoing description, the operation of apparatus madein accordance with my invention will be apparent'. As the gas is cleaned by surface contact With the Water in the troughs'l and 14e anddust deposits tendto cake along the sides of the troughs or Water ways, the drums 5l are rotatedfby means of the motor 56 to drag` the scraper from end to end of the vessel. The action de-A scribed need only occur at intervals in order to'leep the Walls of the vessel clear. As the iaterial is'loosened fromv` the Walls it is car ried'touarc the lower end of the vessel by the Water flow and runs by gravity outwardly through the outlet 26 to Suitable disposal means, not shown. up Vof bars bent to conform to the shape of 38 and f .l 1 i f .1 Y s 56 runs. f t lo owtiet end ol tne Tles- The scraper being madeV the trough does not seriously interfere With the' Water flow Wherever it happens to be along the vessel, though preferably it is kept at the upper or inlet end of the vessel during the intervals when it is not being reciprocated. By adjustment of the slidably mounted member all, the cable 86 is kept taut and is in no danger of fouling.

,f-, mle .t have shown my invention in but one form, it vill be obvious to those skilled Y he art that it is not so limited, but is susceptible or various changes and modifications, Without departing from the spirit thereof, and desire, therefore, that only such limitations shall be placed thereupon as are imposed by the prior art. or as are snecitl allv set Y llilhat U claim is ln a. cleaner embodying an enclosed vessel having a water trough in the bottom thereof surface Contact cleaning of the gras, a reciprocable scraper for loosening dust deposits comprising a" plurality of spaced ,I extending structural `bars havir ds bent upwards to conform to the trough, members extending lon- Mei any ofthe trough for securing the bars together to form a unitary structure, transverseinembers joined tothe upturned portions of the bar, a cableV for reciprocating the sc- @per and extending along the trough through the end Walls of the vessel, means securing the cable tothe transverse members, and means for discharging Water and loosened material from the bottom of the vessel. n

ln testimony whereof I JAMES P. Dovnn, allie; my signature.

i rinus rionnniNG DovEL.

forth in the appended claim. y 

